Home / 11,190.40-15,444.32-6,411.84

Finding the Fourth Proportional to 11,190.40, 15,444.32 and 6,411.84

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Solution

The fourth proportional to 11,190.40, 15,444.32 and 6,411.84 is: 8,849.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,190.40 : 15,444.32 = 6,411.84 : x
  2. Step 2: Convert to fraction form
    11,190.40/15,444.32 = 6,411.84/x
  3. Step 3: Cross multiply
    11,190.40x = 15,444.32 × 6,411.84
  4. Step 4: Simplify right side
    11,190.40x = 99,026,508.75
  5. Step 5: Solve for x
    x = 99,026,508.75/11,190.40
  6. Step 6: Final answer
    x = 8,849.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.